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The advantages and disadvantages of plastic
by：CSSSLD
2021-02-03
Wen injection tooling/VIP
polymer materials is the earliest human know liquid extract from the bark after cutting is a sticky, meaning that it is a fat tree extract. Therefore, at present there are still many people called this kind of polymer material resin. But now with the development of the modern chemical industry, polymer materials are used in the petroleum chemical products or a by-product of petroleum and chemical or oil synthetic products. The modern plastic is not the tree extracts, instead of petrochemical products.
plastic materials compared with other materials, the main superiority lies in the comprehensive performance is good. A kind of plastic material can simultaneously satisfy several or even dozens of different performance. This is mainly due to the plastic in the structure of macromolecular chain. Also contains toughness chain polymerization owner chain segment, segment and soft segment, heat-resisting corrosion chain segment of four kinds of, and at the same time has a strong, hard, tough, soft and heat resistance and other features.
plastic has the following advantages: lightweight
plastic relative density at zero. 83 - 2. 2, one of the largest resin as teflon. Lower relative density of foamed plastics, for high foaming plastic, its relative density could reach 10 to lowest ³ The following. The advantages of plastic light for use on the means of transport, including aircraft, ship is very important. In People's Daily contact with material, besides the relative density is lower than the plastic wood, other materials than plastic.
easy processing
for plastics have excellent viscous flow characteristics, can be in 200 & deg; About the temperature range of melting and plasticizing liquid, processing is very convenient, especially can forming characters are complex products, this is a metal, wood and ceramic materials. In addition, plastic and metal, in addition to the thermosetting plastic, all has the advantages of repeatable processing and wood processing and ceramic can be reused.
high stability compared with the metal material, plastics have excellent corrosion resistant, resistant to most of the acid and alkali water and various kinds of organic solvent, especially the ptfe, resistant to aqua regia and called king of plastic. But the corrosion resistant plastic than glass and ceramic two kinds of materials. Than high strength
plastic itself high tensile strength, although not as good as metal materials, but as a result of plastic relative density is small, which is higher than strength, the strength of the plastic than is generally higher than most of the metal materials.
the disadvantage of plastic machining accuracy difference
in the process of plastic processing and using, due to shrinkage, water absorption and expansion, and the creep effect, make the plastic is not easy to shape and high precision products.
poor heat resistance of
plastic heat resistance than most metal materials, glass, cement and ceramics and only a little better than wood, general plastic heat resistance in 100 & deg; The left and right sides. Only a few high temperature resistant plastic heat resistance can reach 300 & deg; The above.
combustion resistance difference
most varieties of plastics combustion resistance is bad, this is not as good as inorganic materials such as glass, ceramics, slightly better than wood and other organic materials. In plastic, only a few such as ptfe, rigid polyvinyl chloride (PVC) plastic belongs to hard to burn.
aging
the plastic in the processing and use process, vulnerable to the influence of the external natural environment, the degradation of macromolecular chain reaction, the loss of the original performance.
more wonderful sharing: thin wall injection related explanation, just click.
or copy the link: http://www. csssld。 cn//html/2016/Trade_0312/169。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
polymer materials is the earliest human know liquid extract from the bark after cutting is a sticky, meaning that it is a fat tree extract. Therefore, at present there are still many people called this kind of polymer material resin. But now with the development of the modern chemical industry, polymer materials are used in the petroleum chemical products or a by-product of petroleum and chemical or oil synthetic products. The modern plastic is not the tree extracts, instead of petrochemical products.
plastic materials compared with other materials, the main superiority lies in the comprehensive performance is good. A kind of plastic material can simultaneously satisfy several or even dozens of different performance. This is mainly due to the plastic in the structure of macromolecular chain. Also contains toughness chain polymerization owner chain segment, segment and soft segment, heat-resisting corrosion chain segment of four kinds of, and at the same time has a strong, hard, tough, soft and heat resistance and other features.
plastic has the following advantages: lightweight
plastic relative density at zero. 83 - 2. 2, one of the largest resin as teflon. Lower relative density of foamed plastics, for high foaming plastic, its relative density could reach 10 to lowest ³ The following. The advantages of plastic light for use on the means of transport, including aircraft, ship is very important. In People's Daily contact with material, besides the relative density is lower than the plastic wood, other materials than plastic.
easy processing
for plastics have excellent viscous flow characteristics, can be in 200 & deg; About the temperature range of melting and plasticizing liquid, processing is very convenient, especially can forming characters are complex products, this is a metal, wood and ceramic materials. In addition, plastic and metal, in addition to the thermosetting plastic, all has the advantages of repeatable processing and wood processing and ceramic can be reused.
high stability compared with the metal material, plastics have excellent corrosion resistant, resistant to most of the acid and alkali water and various kinds of organic solvent, especially the ptfe, resistant to aqua regia and called king of plastic. But the corrosion resistant plastic than glass and ceramic two kinds of materials. Than high strength
plastic itself high tensile strength, although not as good as metal materials, but as a result of plastic relative density is small, which is higher than strength, the strength of the plastic than is generally higher than most of the metal materials.
the disadvantage of plastic machining accuracy difference
in the process of plastic processing and using, due to shrinkage, water absorption and expansion, and the creep effect, make the plastic is not easy to shape and high precision products.
poor heat resistance of
plastic heat resistance than most metal materials, glass, cement and ceramics and only a little better than wood, general plastic heat resistance in 100 & deg; The left and right sides. Only a few high temperature resistant plastic heat resistance can reach 300 & deg; The above.
combustion resistance difference
most varieties of plastics combustion resistance is bad, this is not as good as inorganic materials such as glass, ceramics, slightly better than wood and other organic materials. In plastic, only a few such as ptfe, rigid polyvinyl chloride (PVC) plastic belongs to hard to burn.
aging
the plastic in the processing and use process, vulnerable to the influence of the external natural environment, the degradation of macromolecular chain reaction, the loss of the original performance.
more wonderful sharing: thin wall injection related explanation, just click.
or copy the link: http://www. csssld。 cn//html/2016/Trade_0312/169。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
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